Merge pull request #339

src/main/java/org/kohsuke/github/GHIOException.java

@@ -0,0 +1,34 @@
+package org.kohsuke.github;
+
+import javax.annotation.CheckForNull;
+import java.io.IOException;
+import java.net.HttpURLConnection;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Request/responce contains useful metadata.
+ * Custom exception allows store info for next diagnostics.
+ *
+ * @author Kanstantsin Shautsou
+ */
+public class GHIOException extends IOException {
+    protected Map<String, List<String>> responseHeaderFields;
+
+    public GHIOException() {
+    }
+
+    public GHIOException(String message) {
+        super(message);
+    }
+
+    @CheckForNull
+    public Map<String, List<String>> getResponseHeaderFields() {
+        return responseHeaderFields;
+    }
+
+    GHIOException withResponseHeaderFields(HttpURLConnection urlConnection) {
+        this.responseHeaderFields = urlConnection.getHeaderFields();
+        return this;
+    }
+}